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thermal shock
thermal stress
thermalize
thermesthesia
-thermic
thermic
thermic lance
thermion
thermionic current
thermionic emission
thermionic tube
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thermionics
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thermal efficiency
ther·mal ef·fi·cien·cy (plural ther·mal ef·fi·cien·cies)


noun 
Definition:
 
ratio of work to energy supplied: the work done by a heat engine divided by the thermal energy required to operate it
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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